如何在复选框检查事件中将文本框的一个值复制到另一个文本框 [英] how tocopy one value of textbox to another textbox on checkbox check event

问题描述

我有一个页面，在页面的右边有帐单地址(即用户控件)，在页面的左边有另一个用户控件，即送货地址.我在页面中有一个复选框，通过选中此复选框，我想用账单地址填写送货地址.我可以通过JavaScript函数有效地执行此操作，但只要这两组文本框是用户控制的，我就不知道如何执行此操作.

I have a page that in the right side I have billing address (that is user control) and on the left side I have another user control that is shipping address. I have a checkbox in the page that by checking this checkbox I would like to fill out the shipping address with billing address. I usefully do this with JavaScript function but as long as here these 2 set of textboxes are user control I dont know how I can do this.

推荐答案

make chechbox => ; Properties => autopostback = true，
在检查事件中

make chechbox=>Properties=>autopostback=true,
in check event

if(chechbox.checked)
{
textbox2.Text=textbox1.Text;
}
else
textbox2.Text="";

//or
if(chechbox.checked)
{
foreach (Control c in form1.Controls)
        {
            if (c.GetType().Name.ToLower() == "webusercontrol_ascx")
            {
                UserControl uc = (UserControl)c;
                TextBox txt = (TextBox)uc.FindControl("txtShiptoName");
                TextBox txt2 = (TextBox)uc.FindControl("txtShiptoName2");
                txt2.Text = txt.Text;
            }
        }
}
else
txt2.Text="";

protected void chkCopy_CheckedChanged(object sender, EventArgs e)
{
     if(txtBilling.Tex!=string.Empty)
     {
       txtShipping.Text=txtBilling.Text;
     }
     else
     {
       lblMessage.Tex="Billing Address is Null";
     }

}

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